1
Translation:
A Tit-Bird,
Spinning on a stick,
It hums, flys,
And shakes its tail.
2
A toy bird attached to a stick on a loose string, allowing a wide range of motion as advertised in the variety of the toy’s personified actions described in the text.
3
A Tit-Bird is a specific type of woodland bird. The blue tit bird (as pictured in the illustration) populates much of Europe and Asia. Tit-Birds can usually be seen frequenting bird-feeders.

4
The blue tit bird is very common and can be ubiquitously found throughout the outdoors and backyards of Russia, making it easily identifiable and relatable in its toy version.
Source 5
Continued theme of using vibrant blue, yellow, red, and black colors to colorfully and imaginatively portray the bird.